基于AR模型的脑-机接口问题研究  

Research on brain-computer interface based on AR

作　　者：唐艳[1] 柳建新[1] 邹清[1] 

机构地区：[1]中南大学信息物理学院生物医学研究所,长沙410083

出　　处：《计算机工程与应用》2009年第1期149-152,共4页Computer Engineering and Applications

基　　金：湖南省自然科学基金~~

摘　　要：在脑一机接口的研究中分类识别技术占有重要地位。将脑电信号中事件去同步化/相同步化现象作为特征信息,深入讨论基于AR模型的自适应算法(AAR)和多变量参数AAR模型算法(MVAAR)在脑电信号特征提取中的应用。结合三种分类器,对这两种算法进行了比较,实验证明两种方法的实验效果都很好,但是MVAAR算法比AAR算法能够达到更高的分类正确率,其阶次一般选取也比较低,数据仿真吻合度高,具有更强的通用性。Identification and classification technology plays an important part in study of the BCI system.This paper presents the methods based on the AR model of adaptive algorithm and multi-variable AAR model algorithm to extract feature information which is related with ERD/ERS in EEG.The coefficients of AAR and MVAAR models respectively are combined with three kinds of classifiers to classify different tasks.From the results,we can see MVAAR algorithm made higher accuracy than AAR.MVAAR algorithm which orders are relatively lower.h realizes multi-channel data input and is more practical.

关 键 词：脑电信号 脑-机接口 自适应自回归模型 多变量自适应自回归模型 

分 类 号：R318[医药卫生—生物医学工程]